You want to give at least a two weeks' notice. Resignation letters are professional courtesies that extend your professionalism, even in the last days of current employment.In this article, we cover everything you need to know about writing a resignation letter without notice and provide an example to get you started. This means an employee can be fired, with or without cause, with or without notice and no penalty will fall upon them. California laws say that, in general, you are not required to give your employers two weeks notice – or any notice – prior to quitting or leaving a job. A two weeks' notice letter of resignation is a professional courtesy and at times a contractual obligation. Here's how to let your boss know you're leaving. A good resignation letter is brief, succinct, and expresses gratitude to your employer. Use this sample to part ways amicably. Use one of our resignation letter templates.